(Scientific life hack : How to make any object a recording camera (black body radiation

    Can you make any object (like a wall) a recording camera ?
You may say that it’s only in science fiction films , but you need to know that in the real world the answer is ” YES ” and it’s a natural thing ! So, let’s talk about Black body radiation 

Article’s components 
[1] Some scientific expressions 
     (A) Electromagnetic waves and Atomic spectrum
     (B) Planck curve
[2] How is black object radiation being done?
[3] How we can use black body radiation
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[1] We need to know some scientific expressions to understand the black body radiation.
[1] . (A) Electromagnetic waves
    We know that electrons are in primary levels ( K , L , M , N , O , P , Q ) , if  we give an electron an energy (like light or heat), it jumps to a higher level then returns to its original primary level but it releases the energy that it had been given while returning as Electromagnetic waves ( which have Wavelengths and frequencies) and these Electromagnetic waves are the Atomic spectrum

and it’s an image of electromagnetic waves’ lengths and you should know that all the visable light (400nm : 700nm) as a package is the white color an the higher than 700 nm or lower than 400nm electromagnetic wave is black. 

[1] . (B) Planck curve

    Planck curve describes the realationship of the body’s temperature (On the Kelvin scale) and its wave’s length and we see that if the length of the wave which is between 400nm and 700nm is visable light and lower than 400nm is UV and higher than 700nm is infrared (as heat) , as an example , the temperature of sun is about 6000K , we see that maximum radiation of the sun’s temperature is in the visable area so we see sun’s light. 

[2] How is black body radiation being done ?
    When light is dropped on a body that appears as black , it sucks all of the energy and the atomic spectrum happens , so after atoms sucked the energy it radiates this energy as waves and if we can see this waves , we can watch what had been happened around the body !
[3] How we can use black body radiation
    black body can be used in investigations so police can see what had been happpend in the crime secne like batman video games !!!!
Written by : Karim Wagdy